Detect user touch with GestureDetectorCompat

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Android example to Detect user touch with GestureDetectorCompat:


MainActivity.java

package com.blogspot.android_er.androidgesturedetector;

import android.os.Bundle;
import android.support.v4.view.GestureDetectorCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private GestureDetectorCompat gestureDetectorCompat;
    TextView textInfo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textInfo = (TextView)findViewById(R.id.info);

        gestureDetectorCompat = new GestureDetectorCompat(
                this, new MySimpleOnGestureListener(textInfo));
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        gestureDetectorCompat.onTouchEvent(event);
        return super.onTouchEvent(event);
    }

    private class MySimpleOnGestureListener
            extends GestureDetector.SimpleOnGestureListener{

        TextView textView;


        public MySimpleOnGestureListener(TextView v) {
            super();
            textView = v;
        }

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            textView.append("\n- onSingleTapUp -");
            return super.onSingleTapUp(e);
        }

        @Override
        public void onLongPress(MotionEvent e) {
            textView.append("\n- onLongPress -");
            super.onLongPress(e);
        }

        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            textView.append("\n- onScroll -");
            return super.onScroll(e1, e2, distanceX, distanceY);
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            textView.append("\n- onFling -");
            return super.onFling(e1, e2, velocityX, velocityY);
        }

        @Override
        public void onShowPress(MotionEvent e) {
            textView.append("\n- onShowPress -");
            super.onShowPress(e);
        }

        @Override
        public boolean onDown(MotionEvent e) {
            textView.append("\n- onDown -");
            return super.onDown(e);
        }

        @Override
        public boolean onDoubleTap(MotionEvent e) {
            textView.append("\n- onDoubleTap -");
            return super.onDoubleTap(e);
        }

        @Override
        public boolean onDoubleTapEvent(MotionEvent e) {
            textView.append("\n- onDoubleTapEvent -");
            return super.onDoubleTapEvent(e);
        }

        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            textView.append("\n- onSingleTapConfirmed -");
            return super.onSingleTapConfirmed(e);
        }

        @Override
        public boolean onContextClick(MotionEvent e) {
            textView.append("\n- onContextClick -");
            return super.onContextClick(e);
        }
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    android:orientation="vertical"
    tools:context="com.blogspot.android_er.androidgesturedetector.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/info"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="bottom"
        android:textStyle="italic" />
</LinearLayout>

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